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H. W. KIBBE.

CALENDAR. e No. 285,138. Patented Sept. 18, 1883.

ATTORNEYS.

N. PETERS. Prmo-hmegnw. washinpn. n. c.

UNITED STATES- v PATENT @Erica .HERBERT 1V. KIBBE, OF UTICA, NEV YORK.

CALENDAR.

SPECIFICATION forming part of Letters Patent No. 285,138, datedSeptember 18, 1883.

Application filed January 12, 1883. (Model.) d

To all whom it may concern:

Be it known that I, HERBERT W. KIBBE, of Utica, Oneida county, N ewYork, have invented a new and useful Improvement in Calendars, of whichthe following is a full, clear, and exact description.

This invention relates to perpetual calendars; and it `consists inacard, strip, or basepiece having a special arrangement of figures inrows or columns connected by diagonal lines, and with the days of theweek at the ends of said rows, also column-spaces extendi ing beyond thesame, and a movable or rotating disk having the months of the yeararranged upon it for operation or adjustment at the initial ends of thecolumns of figures, and in the column-spaces beyond the same,substantially as hereinafter described, the whole forming a very compactand efficient calendar, good for all time-past, present, and future.

Reference is to be had to the accompanying drawing, forming'part of thisspecification, in which the figure representsa face view of my improvedcalendar.

A in the drawing indicates the base-piece or column-piece of thecalendar. This basepiece, which may bemade of card or other suitablematerial, has printed or otherwise delineated upon it seven parallelrows or columns, b, of figures, running upward, and each ranging from 1to 31, inclusive, signifying dates. These date-nuinbers in each of saidcolumns are connected, respectively-that is, each date-number in eithercolumn with the date-number of next denomination above it, to theright-by oblique lines c. At the ends of said rows or columns of figuresor dates, preferably the initial ends thereof, are marked the days ofthe week, commencing with Sunday below the left-hand column, andterminating with Saturday below the extreme righthand column, eachcolumn having a different day of the week referring to it.V Thesecolumns b are extended by ruled lines below the days of the week at thefoot of the columns.

B is a circularly-inovable disk or month-in` dicator, arranged below orbeyond the initial ends of the columns of figures on the base-piece A,and in central position relatively to said collective columns, also ofsuch diameter or dimensions as to include or take in the several columnsor columned spaces below the rows of 'gnres. This disk is radiallydivided between pointers d, marked thereon, with the months of the yearin regular or successive order. This arrangement ofthe disk ormonthindicator B provides for either of its twelve or monthly divisionbeing adjusted by turning the disk to point into any of the sevencolumns b marked with the days of the week.

The calendar is used as follows: Supposing ,it to be used for the year1883, for instance, and the indicator B be turned so that its divisionmarked January comes under Monday in the second column b of dates, whichis the first day of that year, then, following the connecting obliquelines c to the right of the column-piece A,` Tuesday will be indicatedas the 2d of the same 1nonth,Vednesday the 3d, and so on till Saturdayis reached, which will be indicated as the 6th. After this follow therowof sixes to the lefthand side of the colu1nn-piece A, when next abovethe extreme left-hand gure, 6, will be found the 7 th of the month asarranged over Sunday. Commene ing again at this figure 7, and readingthe several columns successively as before and as connected by theoblique lines c, Monday will be found tobe the 8th of said month,Tuesday the 9th, and so on until Saturday the 13th is reached at theextreme right-hand column. The row of thirteens is again followed to theleft handv and the operation continued as before, commencing with Sundaythe 14th and repeated till the 31st, standing over the column markedVednesday, is reached, which is the last day of January, 1883.

Then it is desired to set the calendar for. any future month, the way toproceed is to divide the number of days from the first of the presentmonth (including the 1st) to the rst of the future month by seven. Ifthere be no remainder, the future month commences on the saine day asthe present. lf there be a remainder, it is counted forward from the dayon which the present month began. Thus, the calendar being set forJanuary, 1883, Monday being the first day, supposing it is required toset it for July, 1883, then the number of days from December 31, 1882,to July 1, 1883, is one hundred and eighty-one, which divided by sevenleaves a remainder of six, that represents a like number of days to becounted forward from Monday. This will give IOO -2 v @amas Sunday forthe 1st day of July. The same rule is applicable for all past time; butin set-` ting the calendar for back count, the remainder of the divisionby seven, instead of being counted forward, as in the instance havingreference to the future just cited, must be counted backward.

The monthly indicator or disk B of months may be secured at its centerso as to turn upon the column-piece A by a common eyelet, e, when saiddisk or the calendar is made of paper, rubber, or other analogousmaterial.l Vhen, however, the calendar is made of metal, the rotarymonthly indicator B may be secured to the column-piece Aby a screw. SaidY indicator may also have notches f in its edge to facilitate turningit.

lThe oblique lines c may either be entire, broken, or dotted ones.

A calendar constructed as described may readily be set for anymonth-past, present, or

` future-by a simple but infallible rule. Then made of metal, it will`form a durable or lasting as well as a perpetual calendar. lFurthermore, it may not onlybe constructed cheaply, but sufficiently compactto adlnit of its being carried in the vest-pocket without any inconvenience, and will always be ready and handy for reference. It, or,rather, its colunnrpiece, may also, if desired, be made orn a strip ofmetal of suitable length to admit of its being used as a paper tearer orcutter, and be provided with a hole near its one end, to allow of itsbeing hung upon a nail in the wall or elsewhere.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- In a perpetual calendar, a base or column pieceprovided with seven similarly-numbered rcolumns of consecutive dates,-with oblique lines connecting the denominations in each preceding columnwith the denominations next in order in each succeeding column, andhaving the days of the week successively arranged at the ends of thecolumns, in combination with an adjustable indicator having the monthsof the year successively arranged upon the face of it for operation atthe initial ends of the columns, substantially as specified.

` HERBERT XV. KIBBE. Vitnesses:

C. K. GnANNrs, JOHN FRANKLIN.

